Hello again @oktayhg
Could you try to adjust display_min=10 to display_min=20 in /opt/thinlinc/etc/conf.d/vsmagent.hconf and then restart vsmagent with systemctl restart vsmagent
The error you got in vsmagent.log is similar to the one in the other thread I pasted, have you had a chance to read through it?
https://community.thinlinc.com/t/error-vsmagent-unhandled-xmlrpc-exception/363/2